No sound I did not change any settings, just turned on the tv today and nothing worked. I checked the connections. I have no sound from the tv or the surround sound speakers. I even tried to hook up the speakers directly to the tv

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Try checking first the connection for the audio, then make sure the surround sound receviver is also connected properly and also turn everything OFF then turn back ON since you have a disruption just to refersh all devices and check it again if there will be sound already..

If set is Hitachi 60V500 and speakers are turned on, speakers are good and still no sound from internal speakers you have a audio circuit problem==this model is part of a class action lawsuit for another issue....

hi you didn't mentioned the model number of your surround sound system, for a better solution its important. any why try the following.

if you are connected the analog audio output of your tv to the system using RCA cable, then go to the setup of the surround sound system and change the input assignment setting from digital to analog.If your connected the digital output of your tv to the digital input of your surround system using optical cable then, goto the setup of your surround system and change the input assignment to digital (optical) input.

check your remote to see if it's on mute...or mute is enabled...check
your connections from the tv to the cable box...if your using surround
sound...check those connections as well...if you have a dvd
player..hook it up to the tv and see if you get audio...let me know if
this helps...if not i will give you more things to check